Stack add(int, Object) method in Java with Example
The add(int, Object) method of Stack Class inserts an element at a specified index in the Stack. It shifts the element currently at that position (if any) and any subsequent elements to the right (will change their indices by adding one).
Syntax:
void add(int index, Object element)
Parameters: This method accepts two parameters as described below.
- index: The index at which the specified element is to be inserted.
- element: The element which is needed to be inserted.
Return Value: This method does not return any value.
Exception: The method throws IndexOutOfBoundsException if the specified index is out of range of the size of the Stack.
Below program illustrates the working of java.util.Stack.add(int index, Object element) method:
Example:
import java.util.*;
public class StackDemo {
public static void main(String args[])
{
Stack<String> stack = new Stack<String>();
stack.add( "Geeks" );
stack.add( "for" );
stack.add( "Geeks" );
stack.add( "10" );
stack.add( "20" );
System.out.println( "The Stack is: " + stack);
stack.add( 2 , "Last" );
stack.add( 4 , "Element" );
System.out.println( "The new Stack is: " + stack);
}
}
|
Output:
The Stack is: [Geeks, for, Geeks, 10, 20]
The new Stack is: [Geeks, for, Last, Geeks, Element, 10, 20]
Example 2:
import java.util.*;
public class StackDemo {
public static void main(String args[])
{
Stack<Integer> stack
= new Stack<Integer>();
stack.add( 10 );
stack.add( 20 );
stack.add( 30 );
stack.add( 40 );
stack.add( 50 );
System.out.println( "The Stack is: "
+ stack);
stack.add( 0 , 100 );
stack.add( 3 , 200 );
System.out.println( "The new Stack is: "
+ stack);
}
}
|
Output:
The Stack is: [10, 20, 30, 40, 50]
The new Stack is: [100, 10, 20, 200, 30, 40, 50]
Last Updated :
24 Dec, 2018
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